AME5269 Datasheet, PDF (13/18 Pages) Analog Microelectronics – 2A, 28V, 340KHz Synchronous Rectified Step-Down Converter

AME
AME5269
2A, 28V, 340KHz Synchronous
Rectified Step-Down Converter
n Characterization Curve
100
90
80
70
60
50
40
30
20
10
0
100
Efficiency vs. Output Current
VOUT = 3.3V
VIN = 12V
CIN = 20µF
COUT = 44µF
L = 10µH
1000
Output Current(mA)
10000
Frequency vs. Temperature
400
390
380
370
360
350
340
330
320
310
300
C
290
280
270
V_IN = 12V
ie
260
-50
-25
0
+25 +50 +75 +100 +125
Temperature (^oC)
100
90
80
70
60
50
40
30
20
10
0
100
Efficiency vs. Output Current
VOUT = 5V
V_IN = 12V
C_IN = 20µF
C_OUT = 44µF
L = 15µH
1000
Output Current(mA)
10000
Start-Up form EN
1
2
3
4
4mS / div
V_IN = 12V
V_OUT = 5V
I_OUT = 2000mA
C = 0.1µF
SS
1) EN = 5V/div
2) V_OUT = 2V/div
3) I_L = 2A/div
4) I_OUT = 2A/div
Rev. B.01
13